Designed with the waterfowler in mind, the Tri-Tronics Flyway G3 EXP is expandable up to 3 dogs with a 1-mile range. The system features 24 unique stimulation levels (18 continuous and 6 momentary options). Easy one-hand operation so you can keep your eyes on the dogs while toggling between high, medium, and low output. The colour coordinated stim buttons and collar straps help to avoid confusion. The battery life indicator and two-hour rapid charge ensure your system is ready to go when you are.